How to control humidity in a damp bedroom closet?« Back to Previous Page

The black spots you're describing are almost certainly mold growth, a common issue in Dubai's climate, especially during the high-humidity summer months. The interior wall location is a key detail; these walls can be cooler than the room's ambient air due to adjacent AC duct chases or insulation gaps, causing condensation when the warm, humid air from the room enters the closet and contacts the cooler surface. Your constantly running AC lowers the room's temperature but, if not properly balanced, may not adequately remove humidity from enclosed, stagnant spaces.

To control humidity in the closet, immediate and long-term actions are required. First, remove all affected items for professional cleaning to prevent further contamination. Increase air circulation by leaving the closet doors open for several hours each day and using a portable oscillating fan to direct air into the space. For a closed space, a renewable desiccant like silica gel can be placed inside, but this is a temporary measure.

The most effective solution is to address the root cause: the temperature differential and lack of airflow. I strongly recommend installing a battery-operated humidity meter (hygrometer) inside the closet to monitor levels. Your goal is to keep relative humidity below 60%. For a permanent fix, consider having a certified HVAC technician evaluate your system. They can adjust airflow balances or install a small transfer grille on the closet door to allow conditioned air to circulate effectively.

Given the visible growth, a professional inspection is advisable to rule out a larger hidden problem within the wall cavity. We at Saniservice specialize in mold identification, humidity mapping, and remediation in accordance with Dubai Municipality guidelines. For a thorough assessment and permanent humidity control solutions, please call us at 800-MOLDS (800-66537) or email hello@saniservice.com.